1. The 1.1/4"-3/8" Copper Line for Mini Split Systems measures 6.35mm - 9.52mm in metric dimensions.
2. Composed of 99.9% pure copper, our pipes conform to ASTM B280 and C12200 standards.
3. We offer a range of AC Copper Sizes, including 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", and 1 1/8". Available lengths include 15m, 20m, 25m, 30m, and 50m.
4. The insulation, made from 1/2" Polypropylene, is UV resistant and meets ASTM E 84, UL94, ASTM D1056, and ASTM G 21 standards. It operates effectively in temperatures ranging from -40ºC to 120ºC.
5. Our products are versatile, suitable for any Air Conditioning & Refrigeration Application, including ductless mini-split systems, heat pumps, and centralized air-ducted units.
6.
Pressure Rating: Our pipes support a pressure range of 2100 to 7000 PSI, significantly exceeding the required 700 PSI for R410.
7. We manufacture our own insulation and can custom print your company name, size, meters, etc., on it.
Comprehensive Size List
Size |
Copper Pipe |
Thickness Insulation Size |
Length Available |
Flame Resistant |
1/4+3/8 |
6.35x0.75+9.52x0.8mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
1/4+1/2 |
6.35x0.75+12.7x0.8mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
1/4+5/8 |
6.35x0.75+15.88x0.9mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
3/8+5/8 |
9.52x0.8+15.88x0.9mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
3/8+3/4 |
9.52x0.8+19.05x0.9mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
1/2+3/4 |
12.7x0.8+19.05x0.9mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
3/8+7/8 |
9.52x0.8+22.22x1.14mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
The 1ft-50ft Copper Line Set can be flared and come with nuts at both pipe ends.





Changzhou DABUND Pipe Co., Ltd. is a distinguished manufacturer specializing in HVAC parts, including insulated copper pipes and air conditioner installation pipe kits. Additionally, we produce white embossed PE insulation and aluminum pipes in-house, offering cost savings for our customers. Our innovative and scientifically progressive approach allows our air conditioner connecting pipes to penetrate numerous overseas markets. We aim to be your ONE-STOP source for HVAC & R parts, including Air Conditioner Brackets, Air Conditioner Ducts, Rubber Insulation, Air Conditioner Drain Hoses, Air Conditioner Pumps, and Bases for external air conditioning units. Our products are exported to numerous countries, including the USA, Canada, Germany, and beyond. Our core philosophy, 'Growing with clients,' reflects our commitment to mutual growth and success.
Quality is our top priority. We believe the market is the ultimate test of a company's vitality. We warmly welcome customers and friends from around the globe to collaborate with us and look forward to receiving your inquiries soon. Experience DABUND, Experience Life.
1. Q: What are your payment terms for Single Copper Line For Mini Split System?
A: We accept TT, L/C AT SIGHT, CREDIT CARD, and other flexible methods.
2.
Q: Can I get a sample?
A: Absolutely! We can send you a free sample. You only need to cover the express shipping cost.
3.
Q: What are the sample and production lead times?
A: * Existing sample: 2 days;
* Customized sample: 5-7 days;
* Production time: 15-20 days.
4.
Q: Can I print my logo on the products?
A: Yes, certainly! We offer OEM and ODM services.
5.
Q: What is your standard delivery time?
A: Typically 15-20 days. If you have urgent requirements, please let us know in advance.
6.
Q: What products can you purchase from us?
A: We offer air conditioner installation pipes, copper line sets, line set covers, and various other HVAC parts.
7.
Q: Are you a trading company or a manufacturer?
A: We are a manufacturer.